Question

Red blood cells transport oxygen throughout our body. However, oxygen can also dissolve in blood plasma (Henry's law constant = 3.74 '10-2 mol/L atm at body temperature, 37°C). What is the concentration of oxygen in blood (M) for a scuba diver at a depth where the pressure is 2.0 atm. Assume the mole fraction of oxygen in the tank is 0.21. O 0.11 M 1.3 x 10-2M 7.8 x 10-3M 2.7 x 10-3M 1.6 x 10-2M

Answer 1

Solution : Given : Ky = 3.74x10-mol/L atm Xo, = 0.21 Protal = 2.0 atm Dalton's Law: Po = X, Potal Henry's Law: [02]equilibrize = K Po Finally, [O2 Daguilibrin = KXProtal Substitute as follows. [02] colheiten = 3.74x102 mol/L atm 0.21x2.0 atm = 0.015708M [0] =1.6x10-?M Answer: 1.6*10-²M